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S. J. SHIMER.

GUTTER HEAD.

Patented Aug. 14, 1888.

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' (ModeL) S. J. SHIMER.

CUTTER HEAD.

No. 387,925. Patented Aug. 14, 1888.

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S. J. SHIMER.

GUTTER HEAD. No. 387,925. Patented Aug. 14,1888.

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SAMUEL- J. SIIIMER, OF MILTON, PENNSYLVANIA, ASSIGNOR TO SAMUEL J.SHIMER & SQNS, OF SAME PLACE.

CUTTER-H EAD.

E5PTBCIFICATION forming part of Letters Patent No. 387,925, dated August14,1888.

Application filed February 21, 1888. Serial No. 264,775. (Model) T (LZZwhom it may concern:

Be it known that I, SAMUEL J. SIIIMER, a citizen of the United States ofAmerica, residing at Milton, in the. county of Xorthumberland and Stateof Pennsylvania, have invented a new and useful Gutter-Head, of whichthe following is a specification.

My invention has relation to improvements in cutter-heads used insurface-planing and 1o molding or heading machines; and the objects are,first, to improve the means for adjusting and regulating theplaner-knives on the cutter-head, and, second, to combine in improvedoperative aggroupment a header-knife with 5 the clamping-plate and theplaner-knife.

In my Letters Patent, dated November 30, 1886, and numbered353,509,1'01" improvement for bit-holders for cutter-heads, the knivesare adjusted by means of a clamping-plate having angular slots, theknife being advanced and retracted by the action of screws engaging withboth ends of the knives. In my present invention I propose to utilize anadjustingplate having parallel angular slots to take the studs on theknife and move the plate and the knife with it by means of a singleadjustingscrew. I also combine, in an improved manner, a beadenknifewith the planerknife and clamping-plate.

Myiuvention therefore consists in the novel construct-ion of parts andtheir combination, as willhe hereinafter fully describcd,andspeciall yas the same shall be pointed out in the claims, as required by thestatute.

I have fully illustrated my invention in the accompanying drawings,wherein- Figure 1 is a perspective view of the cutterhead complete withall its mountings. Fig. 2 is a view in elevation of the cutter-head with0 theknives and clampingplatesremoved. Fi

3 is an end view showing the shape of the slots in which theclampingbolts are seated. Fig. BL is a perspective of the clamping-platewith the bcadenknife fitted thereto. Fig. 5 is a similar view with theheader-knife removed. Fig. 6 is a transverse section of the same, takenon the line :0 :0 of Fig. 4 and extended through the planer-knife andadj listing-plate. Fig. 7 is a view of the clampingplate of theheaderknife. Fig. 8 is a bottom view of the clamping-plate with theadjusting plate and knife removed. Fi 9 is a view of the planer'hnife.Fig. 10 is a View of the beadorhnife. Fig. 11 is a view of the adjustingplate and screw. Fig. 12 is a view of the adjusting-plate in modifiedform. Fig. 18 is a view of the clamping-plate laid over the neck of theadjustingscrew. Fig. 14 shows one of the clampingbolts which holds theknife-plate on the cutter-head. Fig. 15 is a view of the clamp and screwto hold the bcadenknife in position. Fig. 16 is aview taken on the linei ofFig. 4-, to show the means for clamping the header-knife inconnection with the knife-clamping plate. Fig. 17 is the knife clampingplate with the adjusting-plate in its bed.

Reference being had to the drawings, wherein like parts appearing in thedifferent figures are designated by the same notations of reference, Adesignates the cutter-head, formed with four plane sides, 1, andparallel end faces, and having on the knife-edges of each side aprojecting flange, 2, which lies under the cuttiug-edge of the knivesand serves as a support to the forward portion of the same. In the faceof the sides are formed countersinlcs or holes 3, to take theretaining-studs on the clamping-plates of the cutter-head.

In each face of the cutter-head are formed T-shaped slots 4, arranged,preferably, in ad vance of the axis of the cutter-head, and in thecutter-head is the usual central aperture, 5, to take the shaft orspindle, which revolves the head. In the T-shaped slots of the head arearranged clamping-bolts 6, having necks and flanges to fit in the slotsand provided with threaded ends, to which are fitted nuts '5.

B designates the plates which clamp the knives to the head, and withinwhich are located the adjusting plates and knives. In the clampingplatesare bolt holes 8, through which the clamping-bolts 6 are projected, andthrough the end is a elainpingscrew, 9, the head of which is shaped toiit the T-shaped slots in the cutter-head, and serves to hold the platewhich lies under the clamping-plate and over the neck of the:nljustingscrew by means of the nut 10 on its threaded end.

On the outer face of the clamping-plates B is a seat, 11, which ispreferably of steel or iron, and is secured to the clamping-plate byrivets projected through the united parts, sub

stantially as shown in the drawings; or it may be cast solid as part ofthe holding -.plate. The seat 11 in contour is shaped by twointerseeting segments of circles, as shownin the drawings; but any othersuperficial shape may be adopted which will provide the requisiterecession or incline from the highest point to atford a suitablefoundation for theknife or bit. In the seat 11 and extending across thechipchuck of the clamping -plate is a circular knife-bed, 12, having onone side an overhanging flange, 13, and on the other side a flaringedge, 14. The direction of the flanges 13 14 is arranged on inclineslaterally to throw the header-bits to the right and left alternately toproduce clearance-space between them and the sides of the cutin makingthe beads or tongues on the stock. Through the seat 11 andclamping-plate is a threaded bolt-hole, 15, to take the threaded end ofthe screw which holds the header-bit clamp in position. The back edge ofthe clamping-plate is made with a chipchuck, 16, which affords roombetween the projecting flange of the head of the clampingplate toreceive the chips and prevent the knives from becoming clogged.

The small bits 17, constituting the beading or molding knives, areformed of segments of an annulus, the curves of which conform to theface of the seat on the clamping-plate and to the circle to be traversedby them. The bits 17 are made with a cuttingface adapted to cut a shapepredetermined, and they are arranged and secured to the cutter-head withone flange resting under the overhanging flange of the seat and theother flange under the edge of the clamp which holds them in place. Thusthey are set at inclines difl'ering laterally in alternate sequence toproduce a clearancespace between them and the walls of the cut in theoperation of cutting the grooves, forms, or beads.

The small bits or header-knives are set to their proper cutting'eircleby means of any proper gage adapted to setthem at a uniform projection,thus keeping the extreme swing of the cut uniform. The bits have nolateral adjustment, but are fixed in their seats in this respect by theclamp and screw-bolt, as shown and hereinafter described, and traversethe same line of cut, producing in their arrangement the requisite depthand width of the out. Any slight difference occasioned by wear in thecutting-circle of the small bits and surface-knives may be remedied byadjusting the surfaceknives by means of the adj ustingscrews.Unsuccessful efforts have heretofore been made to make thisbead-cut withstraight cutters arranged parallel and without clearauce-eut, the reasonor causes of the failure being that the lateral wear spoiled the cuttersafter one adjustment, and because such cutters have to be filed on theback or outer circle, thus continually reducing the diameter of thecircle traver'sed and rendering adjustment, to be frequently made, anoperation in such case tedious and too costly for practical use.

In the construction shown and described of my improved circularsectional headers the filing is accomplished on their inner face and theline of cut recedes very slowly, and the clearance given the bitsprevents lateral wear. The adjustment,when necessary, can be madewithout any remodeling of the bits, as is required under the old methodof arrangement.

The small bit-clamp 18 (shown in Figs. 7 and 15 of the drawings)consists of a segment of an annulus adapted to fit the seat in theknifebed, and has the outer surface inclined or struck down, as at a,and has inclined flanges 19 20, to rest, respectively, over the flangeon the'bit and against the flaring-edge flange of the bit-plate, asshown in Fig. 4. A clamping-screw is projected through the plate of theclamp into the bit-bed, as shown. On the bottom of the clamping-plate Bare studs 21, which set in the holes 3 in the faces of the cutter-head.In the forward part of the bottom face of the clamping-plates B is arectangular seat, 22, in which the adj ustingplate is seated. At the oneend, as at 23, this seat 22 is deepened to provide room for the movementof the adj ustingscrew, and a groove, 0, may be extended from the end ofthe part 23, to take the end of the screw. In the end of theclampingplate is formed a bearing, 24, in which the neck of the adjnstingserew is arranged, and over the neck of the screw is arranged aretaining-plate, 25, which is provided with a. bearing, (1, to set overthe neck of the adjusting-screw. This plate is held in place by thesmall clampingscrew 10, and on the inner edge is grooved to receive theedge of the surface-knife, as seen at e. The adjusting-screw 26 has itsshank th readcd, and is formed with a neck, 27, which turns in thebearings 24, and thus holds the screw from progression or recession. Onthe threaded shank or stem of the screw is fitted a nut, 28, which fitsin a nutseat, 29, in the adjustingplate 30. Instead of the nut 28 andseat 29, the end of the adj listing-plate may be struck down, as shownin Fig. 12 of the drawings, and the screw work in a threaded aperture inthe struck-down part. The adj ustingplate 30 is of the form shown in thedrawings, and fits the seat made for it, being given a limited movementlengthwiseiin both directions. In the adj usting-plates are formedparallel diagonally-arranged slots 31, which engage with the studs onthe bottom of the planer-knives, and as the plate is moved by theadjustable screw the knife is correspondingly-moved, forward orbackward, to a greater or less projecting cutting'edge. The planerknife32 consists of a flat piece of steel, having beveled ends 33,to set inthe grooves in the clamping-plate at the end of the main knife-clampsand in the inner edge of the shoulder f on the plate, and is providedwith studs 34, to engage in the diagonally-arranged slots of the adjusting-plate.

In my invention, as disclosed in Letters Patent No. 353,509, thediagonal slots or grooves are formed in the clamping-plate, and the ad-ICC justment is made by means of screws letin the opposite ends of theholding-plate, with their ends against the ends of the knife. Thisrequires both screws to be turned-that is, one to be loosened and theother tightenedbefore the knife can be adjusted. In my present inventionI accomplish the adjustment by a single screw and an adjusting-platehaving diagonal slots.

The operation of the device is as follows: The adj ustingplate is laidin its bed with the neck of the adjustingserew in its bearing, and theshank with the nut in the aperture of the plate. The knife is thenplaced in the rabbct ofthe clamping plate over the adj ustingplate, andwith its studs in the diagonal slots there of, and then the endclampingpiece is laid over the end of the plate and neck of the screw.The clamping-plate is then arranged in place and clamped fast. Theadjustment may be made at any time by loosening the clamping-bolts andturning the adjustingscrew to thrust the knife forward or to draw itback. The seat for the small bit being arranged to take them in a fixedposition, as de scribed, they may be arranged therein, and, beingprojected to the proper point, the clamp is made fast and the bits areready for use.

.Vhat I claim is- 1. The combination, with a planer or cutter-hendstock, of a holdingplate removably secured to the said stock and formedwith an adjusting-plate seat, and adapted to receive a knife under theadjusting-plate, an adjustingplate, shorter than the holding plate andknife, formed with parallel diagonal slots, an adj usting-scrcw let inthe end of the holding plate and engaging with the adjusting-plate, anda knife formed with studs to engage the diagonal slots of theadjusting-plate, substantially as described, and for the purpose stated.

2. The combination, with a planer or cut ter-hcad stock, of aholdingplate removably secured to the said stock and formed with a seatto take an adjustiugplate, and a knife between the adjusting-plate andthe face of the stock, an adjusting-plate, shorter than the knife,arranged to slide lengthwise in the platescat of the holding-plate, anadjust-ingscrew held in a bearingin the end of theholdingplate againstretraction and progression, and with its threaded stem engaging athreaded receptacle in the adjusting-plate, and a knife on theadjusting-plate formed with studs to engage the diagonal slots of theadjustingplate, substantially as described.

3. The combination, with a cutter-head stock formed with countersinks 3,a holding-plate having studs to set in the countersinks of the head, andhaving a seat to receive a knife-adjusting plate, and a knife havingstuds, of an adjustingplate arranged over the knife and formed withdiagonal slots l o engage the studs of the knife, anadjusting-screw toreciprocate the adjustingplate, a plate to hold the screw in itsbearing. and a. clampingscrew to clamp the end of the holding-plate, theplate over the neck of the screw, and the end of the knife,substantially as described.

4. The combination, with a cutter -head stock, its surlacecutting knife,and the holding-plate, of abeader-bit mounted on the eX- terior of thelmlding-plate, substantially as described.

5. The combination, with a. cutter head stock, the knife, and theholding-plate, of a llOfLllOldill} scat rigidly secured to the exteriorof he holding-plate and formed with a bitbedhaving a, curved surface andinclined edge flanges, a sectional annular header bit arranged. on abit-bod, and a clampingpicce to hold the beater-bit in the bed ininclined position, sul'isiautially as described.

6. The coinhinatiou,with the holdingplates and the surfaceplauing knivesof a cutterhead, of two or more sectional annular bits mounted on thehack of the holding-plate and arranged to incline lengthwise inalternation to provide clearance-space, substantially as described.

7. .[n a cutterhoad, the combination, with the holding-plates of thesurface-luiivcs, of a bcadcr-bit scat, ll, of hard metal, seen red tothe exterior of the holding-plate,and formed with akuilescat, aclamping-plate, 19, and a bolt, 24 l0 hold the clamp on a bit in thescat, substantially as described.

in witness whereof I have hereunto set my hand in the presence of twoattesting witnesses.

SAMUEL J. SHlME-R.

A tlest: 4

43110. S. Summit. Jenn A. iinck.

